Related:

• Things do not change; we change. -- Henry David Thoreau
• There are some things which cannot be learned quickly, and time, which is all we have, must be paid heavily for their acquiring.
  They are the very simplest things and, because it takes a man's life to know them, the little new that each man gets from life is very costly and the only heritage he has to leave....
• Don't engage in arguments, but if cornered, ask an irrelevant question and lean back with a satisfied grin while your opponent tries to figure out what's going on - then quickly change the subject.
• All things change, nothing is extinguished.
• Our lifetime may be the last that will be lived out in a technological society. -- Isaac Asimov
• You think things are going well for you, do you? Things could change.
• How many racists -- does it take to change a light bulb?
  The question is irrelevant since you can never find anyone that admits to being a racist even if you knew how many you were looking for....
• The only constant since the beginning of time is change.
• To change and change for the better are two different things. German Proverb